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1. US20130044685 - Reference signal for a coordinated multi-point network implementation

Office
United States of America
Application Number 13578573
Application Date 14.02.2011
Publication Number 20130044685
Publication Date 21.02.2013
Grant Number 08885563
Grant Date 11.11.2014
Publication Kind B2
IPC
H04W 4/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
H04J 11/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems
H04W 28/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
H04W 48/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction; Network selection; Access point selection
08Access restriction or access information delivery, e.g. discovery data delivery
H04W 4/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service ; Services to user groups; One-way selective calling services
CPC
H04J 11/0053
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems, ; e.g. using WALSH codes
0023Interference mitigation or co-ordination
005of intercell interference
0053using co-ordinated multipoint transmission/reception
H04B 7/024
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
022Site diversity; Macro-diversity
024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
H04W 4/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
H04W 28/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
H04W 48/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction
08Access restriction or access information delivery, e.g. discovery data delivery
Applicants Fong Mo-han
BlackBerry Limited
Yu Dongsheng
Xu Hua
Novak Robert
Guo Shiguang
Cai Zhijun
Heo Youn Hyoung
Inventors Fong Mo-han
Yu Dongsheng
Xu Hua
Novak Robert
Guo Shiguang
Cai Zhijun
Heo Youn Hyoung
Agents Fish & Richardson P.C.
Priority Data PCT/US2011/024739 14.02.2011 US
Title
(EN) Reference signal for a coordinated multi-point network implementation
Abstract
(EN)

A system and method for broadcasting a channel state information reference signal (CSI-RS) is disclosed. A CSI-RS that is orthogonal to CSI-RSs transmitted by each of a first network cell and each of a set of neighbor cells that interfere with the first network cell is identified. In one implementation, the first network cell has a coverage containing a coverage of a second network cell. The method includes transmitting, from the second network cell, the CSI-RS that is orthogonal to CSI-RSs transmitted by each of the first network cell and each of a set of interfering neighbor cells.


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